Inclusion body hepatitis (ibh), Biology

Inclusion body hepatitis (IBH)

A disease of chickens characterized by acute mortality, often with severe anemia, is caused by an adenovirus. A number of different serotypes have been isolated from disease outbreaks but they may also be isolated from healthy chickens. This disease was first recorded in 1963 in USA and since then has been reported from many countries including India. Transmission may be vertical or lateral. Infected birds remain carriers for a few weeks. The virus is generally resistant to disinfectants (ether, chloroform, pH) and high temperatures. Since adenoviruses are commonly found in healthy poultry, isolation alone does not confirm that they are the specific cause.

Symptoms and lesions: The virus, mostly as opportunistic behaviour, attacks the host under stress but with low morbidity and low mortality. Immunosuppression, for instance due to early IBD challenge or congenital CIAV infection, may be a perpetuating factor. The birds show depression, jaundice and diarrhea. On PM examination the carcass is anemic and the there is conspicuous enlargement of liver with brown discoloration with hemorrhages, fatty degeneration and necrosis. Nephritic alterations are seen in the kidney, atrophic changes may also be present in the bursa of Fabricius.

Diagnosis: Clinical symptoms and lesions along with intranuclear inclusion bodies demonstrated in hepatocytes is indicative. The inclusions are usually eosinophilic, rarely basophilic, large, and irregular with a clear halo around. Virus isolation from the liver by chick embryo inoculation, detection of viral antigens in affected tissues by fluorescent antibody test and detection of antibodies in recovered chicks by agar gel diffusion or ELISA lead to confirmatory diagnosis.

Prevention and control: Apart from good hygiene and management practices with adequate biosecurity, breeding stock should be checked to reduce the incidence.

Posted Date: 9/18/2012 8:52:24 AM | Location : United States







Related Discussions:- Inclusion body hepatitis (ibh), Assignment Help, Ask Question on Inclusion body hepatitis (ibh), Get Answer, Expert's Help, Inclusion body hepatitis (ibh) Discussions

Write discussion on Inclusion body hepatitis (ibh)
Your posts are moderated
Related Questions
Excluding the effects of cardiac output and hormones, describe the other factors that may affect blood pressure and blood flow in a middle-aged man who is exercising in an aerobics

Which type of plant tissue is cork? Cork, the material, for example, used to cap wine bottles, is extracted from the suber of a special oak known as cork oak.

Dominance In each community, a few over topping species are present in greater bulk. By their greater number or biomass (living weight) the dominant species modify the habitat

Explain about the saccharin - artificial sweeteners? The oldest artificial sweetener is saccharin (the calcium or sodium salt of 1, 2- benzisothiazol-3(2H)-one 1, 1-dioxide) as

Explain about the Maurice Theory according to corneal transparency. Maurice Theory: The uniform collagen fibrils are arranged in regular lattice pattern separated b

Outline three client considerations when taking an accurate pulse oximetry reading.

Categories of Air Pollutants From the above list you can see that the air pollutants can be broadly classified into the following two categories: Primary Pollutants

Define General Purpose and Specialized Culture Media? General purpose media - These support the growth of many microorganisms. Example: nutrient agar, trypic soy agar etc. S

What is prophylaxis? Prophylaxis are measures taken to stop diseases. For instance, the use of condoms in sexual relations is a prophylaxis against contamination by agents that

The different organs of the respiratory system  Nostrils through which we inhale air in the nasal cavity  Pharynx  Larynx  Trachea (wind pipe)  Lungs - Bronchi,